Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos nomes únicos / embalagens existem para o título da música "rockaway beach"?
 ###Tabelas: CREATE TABLE list_of_songs_released_in_2007 (list_of_songs_released_in_2007_id AUTO_INCREMENT PRIMARY KEY, Song title VARCHAR, Artist VARCHAR, Year INT, Genre VARCHAR, Single / Pack name VARCHAR, Release date VARCHAR, Family Friendly VARCHAR, Additional Rock Band 3 Features VARCHAR) CREATE TABLE fm_stations (fm_stations_id AUTO_INCREMENT PRIMARY KEY, Frequency VARCHAR, Name VARCHAR, Format VARCHAR, Call Sign VARCHAR, Covered Location VARCHAR) CREATE TABLE political_party_strength (political_party_strength_id AUTO_INCREMENT PRIMARY KEY, State VARCHAR, Governor VARCHAR, Senior U.S. Senator VARCHAR, Junior U.S. Senator VARCHAR, U.S. House Delegation VARCHAR, Upper House Majority VARCHAR, Lower House Majority VARCHAR) CREATE TABLE grandmasters (grandmasters_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Country VARCHAR, Birth Date VARCHAR, Date INT, Earned VARCHAR, Peak rating (Nov 2012) INT) CREATE TABLE complete_formula_one_results (complete_formula_one_results_id AUTO_INCREMENT PRIMARY KEY, Year INT, Entrant VARCHAR, Chassis VARCHAR, Engine VARCHAR, Pts. INT)  
SELECT COUNT Single / Pack name FROM list_of_songs_released_in_2007 WHERE Song title = " Rockaway Beach "